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Louis-Antoine Ranvier (2 October 1835 – 22 March 1922) was a French physician, pathologist, anatomist and histologist, who discovered the nodes of Ranvier, regularly spaced discontinuities of the myelin sheath, occurring at varying intervals along the length of a nerve fiber.
A single oligodendrocyte can extend its processes to cover up to 40 axons, that can include multiple adjacent axons. [2] The myelin sheath is not continuous but is segmented along the axon's length at gaps known as the nodes of Ranvier. In the peripheral nervous system the myelination of axons is carried out by Schwann cells. [1]
"Node of Ranvier" appears to be used much more frequently. The current title ("Myelin sheathe gap") cannot even be graphed on Google n-gram --LT910001 05:58, 29 May 2014 (UTC) Note. The history of Node of Ranvier needs to be preserved as it was merged. Jenks24 14:32, 6 June 2014 (UTC)I
The protein encoded by this gene, ankyrin-3 is an immunologically distinct gene product from ankyrins ANK1 and ANK2, and was originally found at the axonal initial segment and nodes of Ranvier of neurons in the central and peripheral nervous systems. Alternatively spliced variants may be expressed in other tissues.
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OPCs extend their processes to the nodes of Ranvier [11] and together with astrocyte processes make up the nodal glial complex. Since the nodes of Ranvier contain a high density of voltage-dependent sodium channels and allow regenerative action potentials to be generated, it is speculated that this location allows OPCs to sense and possibly ...
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The BRAT diet (bananas, rice, applesauce and toast) can work well.Try a little food and see how you feel, then eat a little more as you can tolerate it. “Avoid aggravating GI symptoms by not ...